<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        circle {
            fill: lightcoral;
            stroke: lightgreen;
            stroke-width: 50;
            stroke-dasharray: 0 158;
            animation: fillup 5s linear infinite;
        }

        @keyframes fillup {
            to {
                stroke-dasharray: 158 158;
            }
        }

        svg {
            transform: rotate(-90deg);
            background: lightcoral;
            border-radius: 50%;
        }
    </style>
</head>

<body>
    <svg width="100" height="100">
        <circle r="25" cx="50" cy="50" />
    </svg>
</body>

</html>